Fuzzy FMEA application to improve decision-making process in an emergency department.

•Fuzzy logic approach is preferable to fix the drawbacks for reprioritization of the Risk Priority Number (RPN).•Fuzzy logic could reduce the drawback of occurred Traditional FMEA in evaluation and prioritization of failures.•The application of using Fuzzy FMEA in the emergency department can be adopted suitably. All of members were able to assess dependently without any bias from the team members.•Fuzzy FMEA can be applied for the first time to improve decision making process in an emergency department of a public hospital.